1. Aristotle. Posterior Analytics. Clarendon Press, Oxford, 2. edition, 1994. Translated with a commentary by Jonathan Barnes.
2. Stephen E. Boër and William G. Lycan. Knowing Who. MIT Press, Cambridge, 1986.
3. Ivan Boh. Epistemic Logic in the Latter Middle Ages. Routledge, London, 1993.
4. Axel Bühler. Die Logik kognitiver Sätze. Duncker and Humblot, Berlin, 1983.
5. Elisabet Engdahl. Constituent Questions: The Syntax and Semantics of Questions with Special Reference to Swedish. D. Reidel Publishing Co, Dordrecht, 1986.